The HVMP Extra Heavy Weights is 15.8 oz each. That's almost 1 lb. However, I can't say that they dampen the bar vibration at all. Not for me at least. They do look good though.


Beside, may be the Yamaha engineers knew something.
If it's that easy to tame the vibrations, they would have done it at the Yamaha factory.

After using it for 3 weeks, I reinstalled the stock bar end weights and they are much better.